What about the new 80-400 f/4.5-5.6. http://www.petapixel.com/2013/03/05/nikon-unveils-new-af-s-80-400mm-f4-5-5-6-first-update-in-over-a-decade/
Well, the increase is price between the 2 generations of the 80-400 seems less than the effect of currency and inflations in the meantime.
The US$ was deflated roughly 50% relative to the Yen between the release years of the 2 iterations of the 80-400, it shouldn't come as a surprise that an impact can be seen on the price of imported goods.
- you had 120 Yen for 1 US$ in 2001,
- you had 80 Yen for 1 US$ end of 2012.
So if you are a US citizen, you need to scream at your Federal Reserver and authorities for having decided to deflate the US$ to favor exports. It would seem that photographers were not part of the target.
That is of course without taken into account the inflation in the US that, by itself, was around 30% between 2000 and 2012.
All in all, the 80-400 at its current price of 2,700 US$ is in fact cheaper than the original lens was. In fact, Nikon should be thanked for not having adjusted the price of the old 80-400 for inflation all along. If you are mad at them, I cannot imagine how mad you are at your grocery store... because they do adjust for inflation on a yearly basis.